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unix: handle case when addr is not initialized after recvmsg

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If the handle was opened using `uv_udp_open` ift's possible that the
kernel doesn't fill in the msg_name field, so return NULL as the address
in that case.

fixes #1252
This commit is contained in:
Saúl Ibarra Corretgé 2014-04-23 18:14:13 +02:00
parent fc5f11bf9f
commit f55b853be5
1 changed files with 7 additions and 6 deletions
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13
src/unix/udp.c
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@ -221,16 +221,17 @@ static void uv__udp_recvmsg(uv_loop_t* loop,
handle->recv_cb(handle, -errno, &buf, NULL, 0);
}
else {
flags = 0;
const struct sockaddr *addr;
if (h.msg_namelen == 0)
addr = NULL;
else
addr = (const struct sockaddr*) &peer;
flags = 0;
if (h.msg_flags & MSG_TRUNC)
flags |= UV_UDP_PARTIAL;
handle->recv_cb(handle,
nread,
&buf,
(const struct sockaddr*) &peer,
flags);
handle->recv_cb(handle, nread, &buf, addr, flags);
}
}
/* recv_cb callback may decide to pause or close the handle */